Here's my take (aside from the great advice already shared in this thread):
Yes, Paulsons are generally more desirable than CPC. They often hold a much higher resale value. A paulson chip is finite, and not likely to be purchased/made again. Whereas you create a CPC set, and it instantly loses resale value, as nobody is going to pay you more for a chip they can replicate from CPC directly. That said, the value of CPC comes from the carefully crafted designs.
Now, resale amount isn't always the most important factor in value.. There are some truly epic CPC sets! And to give perspective, many of us attend (or host) chip meetups, where 30+ chippers gather to play cards on some epic tables and use some epic chip sets. Sure, there are often custom or special Paulson chip sets that make appearances, but more often the epic custom CPC sets are coveted and admired by those attending. People even bring guest sets to put into play.
Here's another example. I had an amazing set of MINT Paulson tourney chips, in my collection. These are often referred to as some of the best tourney chips ever designed. However, I also have a custom tourney set from CPC that people rave about (at least in my local circles). When we were getting together to play, the CPC chips were requested every single time. No one wanted to play the Paulsons.
Now, people pour their hearts into the designs of their particular CPC sets, and they match their particular tastes for color and design. So, of course everyone thinks their chips are the best looking chips. I don't honestly feel like my CPC tourney set is better looking than the amazing Paulson grail set, BUT the level of personalization involved often makes even my players more interested in playing them. So Paulson > CPC for resale/value. CPC > Paulson for cool factor and customization.